Thanks Dizzy for the link
But the problem of memory will stay because the need of drivers !
Making the boot with a tool or by hand, the better will stay the method by hand because you optimise the loading in upper memory for somes programs/drivers.
Changing the dos version is useless too because i have try with my old MS-Dos 5.0 (the last pur Dos before Win95 & Dos 7.0), what i gain in memory free is not enough.
Now i have seen (followed your links) that is now Dr-Dos 7.03 but the siteweb seem to be dead because you cannot dowload the disks image today (white IE error page with link not found).
Now, i don't need dos anyway because i play with windows games or with WinUAE for old games
